I don't so much care if it's a Chinese knock off or a real deal Bosch BMP, but if you're interested in measurements that are better than vague vibes, the difference between a cheap poopoo glass thermistor hooked up to the noisiest 8-bit ADC (let's be real about what's actually in there), sets a real limit on anything that device will ever be capable of, especially if you have more than one. If a device has got a real deal BMP581 (yes that's a pressure+temp sensor, but let's roll with it) that's a whole other ballgame, and yeah they could have messed up the housing or it could brown out, have bad lower power characteristics, or bad firmware, but that BOM difference says a lot about what the engineer who designed it probably thought the device should be capable of.

Maybe none of the tested devices is available but another one with similar hardware is.